Hens and Chicks produce numerous offspring, thus allowing them to "live forever". The quantity and speed at which babies are produced depends on the variety. Sempervivums can be divided anytime during the spring/summer growing season. The baby chicks can be re-planted elsewhere or left to grow around the mother hen.
There are three common types of Hens and Chicks: Sempervivum, Jovibarba heuffelii and Jovibarba Rollers. They are all often called Sempervivum, but each type produces offspring in a different manner.
Sempervivum
These grow babies on runners. Just pull off the chicks and plant elsewhere. It is best to remove the babies when the runner has begun to wither. Offsets root quickly and contact with soil is enough for them to start growing.

Jovibarba heuffelii
This species does not produce "chicks" on stolons. Instead the offspring of this plant are produced within the mother plant. To propagate it must be split with a knife.

Jovibarba Rollers
These types of Hens and Chicks produce lightly attached "chicks" that easily pop off and roll away from the mother plant.
Growing from the offsets preserves the characteristics of each cultivar. Seeds taken from the Sempervivum flowers generally produce plants that are untrue to type.

Sempervivum Life and Death Cycle
Once a hen plant produces a chick, that chick will begin producing its own babies after only 1 season. Sempervivum plants generally only live for 3 years, so the plants have 2 productive years before they die. After 3 years a Sempervivum grows a tall center stalk that blooms before the plant dies. Cutting off the center stalk will not prevent death.
It is extremely fun to grow Hens and Chicks and watch them mature and produce offsets. Their colors change drastically throughout the season due to maturity, temperatures, sunlight exposure, and other factors. Be sure to give your plants enough space to spread. Ideally they should have 4” for small plants and 6-8” for large varieties. Adequate space produces nicely formed rosettes.
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